Pump



E. A. DAVIS June 21, 1932.

PUMP

Filed Sept. 29, 1930 2 Sheets-Sheet 1 FIG. 6.

INVENTOR- Ennn AI] Elvis BY MM,

F IG. 1.

ATTORNEYS.

June 21, 1932. E. A. DAVIS 1,864,412

PUMP

Filed Sept. 29, 1930 2 Sheets-Sheet 2 FIG. 3.

INVENTOR.

' Bum-1 AD avis BY Z I. Z

0/, ATTORNEYS Patented June 21, 1932 UNITED STATES ELTON A. DAVIS, 01?PADRdNI GOIJORADO PUMP.

Application filed September 29; 1980. Serial No; 485,198. 3

This invention relates to liquid pressure pumps, an object of theinvention being to provide a continuous supply of liquid, such as water,under pressure. A nother object is '5 to provide a pump, which may bepositioned in wells of any depth, and which will effectively deliver acontinuous stream of liquid therefrom through a pipe line. Anotherobject is to provide a pump, of the general 10 character described,which will require only a small amount of power for its operation, thispower being supplied either by a prime mover, or by hand. Another objectis to provide a. pump, which will be practically "15 automatic in itsoperation, and which will be of such simple construction as topractically eliminate the possibility of its fail ing to properlyfunction. Other objects may later become apparent.

In the accompanying drawings:

Figure 1 is a vertical sectional diagrammatic view of a liquid pressurepump, con structed in accordance with this invention, and applied to a.well of liquid, this view being shown broken, to indicate that the partsare actually longer than shown.

Figure 2 is an enlarged detailed showing of Figure 1, this view alsobeing broken.

Figure 3 is a view partly in elevation and partly in verticalsection,,o'f the submerged cylinder shown in Figure 2.

Figures 4 and 5 are respectively a vertical sectional view and a sideelevation of the operating valve shown in Figure 2.

Figures 6 and 7 are views similar to Figures 4 and 5 respectively, thelever being shown thrown in another position.

Figure 8 is a side elevation of the reverse side or the valve shown byFigures 4 to 7.

In these drawings, similar numerals refer to similar parts throughoutthe several views.

The invention is characterized by the use of two cylinders, A and B, thecylinder A being positioned beneath the level of a liquid body and thecylinder B being positioned above this level.

As shown the cylinder A is positioned in a well casing 10, well beneaththe level of the liquid body 11. This cylinder A may be positioned inany manner, a pedestal 12 being 1 compressed air from a tank 31. v may'b'e'supplied with airi'by hand or motor driven pump in a conventionalmanner; The

valve 29 iszpreferably of the rotary type containinga rotatable body 32,which is operated 85 -angular'bent'rod'3'6, havingstops-38 and shown forillustrative purposes. The well casing lOisshown provided with a casinghead*13..' f

The cylinder: A is shown provided with". a

reciprocable' piston 14, having a piston rod'15 55 passingztlirougli astuifin'gbox 16 in the head of this cylinder. Inthe upper right" handside of 'the' cylinder isan" inlet 17: provided withan inwardactingcheck valve 18, the op positesideof the topbeing provided'with an outlet19 having an outward actingcheck valve 20. Thebottom of-this'cylinderalso hasian'inlet'2l provided with an inwardiact- 'ing check va1ve'22',and an outlet 23 provided, r

withan'outwardacting check'valve 24.v The outward 'acting'check valves2'O'and 24' are connected-to 'apipe 25, which extends upwithin :the wellaca sing, anotout through the casing headi13; M

The cylinder '13. is shown formed with a largeioutwardly extendingflange 26', which is clampe d between the casing head'13andcasing'wall'lOso'as to position the cylinder above the'level? of'the'i body ofliquid 11; A pipe...

' line 27 is tapped into "the upper'part of this cylinder, and a shorterpipe line 28 is tapped I toithebottom; afourway'valve 29 beinginterposedbetween these two pipes lines. This valve-ihasalthirdipipe 3Oconnected'to it, the,

other end of this pipe line being'supplied with This tank by anapertured lever 33. Preferably a spring 34: is connected to this lever,s01 that the valve will be very quick in action.

WVithin the cylinder B isa reciprocable pis- 'toni3'5, the piston rod 15extending from the cylinder A being. arranged in connection therewith,so that the pistons 35 and 14 will move simultaneously from one end oftheir respectivecylinders'to the other. A right atiopposite endsthereof, is fixed toithe piston rodv 15 soas to pass through theapertured handle-.33 of the-valve 29.- Preferably the stops. 38 and 39are adjustably secured to A the rod .36 byymeansiof screw bolts 40.

The pump as shown is entirely automatic in tioned means, a reciprocatingpiston in each operation. In Figure 2 the valve 29 is in the cylinder,means for inter-connecting sald pisposition shown in Figures 4 and 5.The rotons, and means for introduclng an elastic tatable body 32 in thisvalve is then in a pofluid under pressure to said second cylinder.

sition to permit air to feed to the bottom of the cylinder B, causingthe piston 35 to rise, and to carry the piston 14 upwards. Thecompressed air, being of an elastic nature will continually keep thewater contained in the cylinder A under pressure, so that as water iswithdrawn from the pipe 25 from this cylinder, through its outlet 19 andvalve 20, the 7 piston 14 will be continually urged upward to maintain astate of pressure. As the piston 14 rises, the check valve 22 will opento permit water being sucked in throughthe inlet 21, the check valve 24preventing the passage of water back through the outlet 23. As thepiston 14 approaches the top of the cylinder, the stop 38 on the rod 36will butt against the handle 33 of the valve 29, and slowly rise sameagainst the compression of the spring 34 until it has passed a deadcenter, when this spring will snap the handle quickly to the upwardposition, thus releasing the compression from the bottom of the cylinder13 through the free outlet of the valve, and at the same timeintroducing air under pressure to the top of the cylinder, through thepipe 27. This will force the piston 14 downward so as to displace watertherefrom through the outlet 23 and valve 24, the valve 22 closing toprevent escape of water through it, and, at the same time, the valve 20will close to prevent the escape of water from the pipe 25 at thatpoint, while the valve 18 will open to permit the cylinder to intakewater through the inlet 17. As long as water is drawn out through thepipe 25, this cycle of operation will continue, provided the airpressure in the tank 31 is maintained.

The pump described herein enables the prostruction is very simple and itis not necessary to employ a large amount of operating power, as is thecase with so many pumping systems. It may advantageously be employed inrural communities where a complicitled pumping system would beobjectiona e.

It is to be understood that the invention as here shown and described,is for illustrative purposes, only, and that the scope of the appendedclaim is not to be limited thereto, but that this claim is intended tobe construed broadly.

I claim In a liquid pressure pump the combination of a cylinder providedwith a plurality of inlets and outlets, means supporting the cylinderbelow the level of a liquid body, a second cylinder, means supportingthe second cyllnder in adjustable relation to the first cylinder andindependently of the first men- ELTON A. DAVIS.

